Hubble Astronauts Connect at Tweetup

STS-125 astronaut Mike Massimino at a Tweetup at NASA Headquarters in Washington. Credit: NASA/Carla Cioffi
Nearly 200 of NASA's Twitter followers attended the event at NASA Headquarters with astronaut Mike Massimino (@Astro_Mike, above) and his crewmates from the Hubble repair mission . › @NASATweetup→ | › @NASA→ | › Flickr→

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